Uh, yes....that would disable all your startups. Not very nice of them not to tell
you to re-enable them after the troubleshooting was completed.
Ideally, you should re-enable all your startups or at least all the necessary ones,
and delete the shortcut in the StartUp folder that we made. This assumes of course
that the Avast startup entry is still in msconfig's Startup tab to be turned back
on.
In msconfig> Startup tab, look for the entry named Avast! (which should point to the
path of ashDisp.exe). If it is there and is disabled (unchecked), go to your Start
menu> Programs> StartUp folder, delete the shortcut we put there; then enable the
Avast! entry in msconfig by putting a check in its box, click OK, and reboot.
What other items in msconfig do you still have disabled (unchecked)?
Are there any others that point to an Avast module?